Dynamic determination of available slots for transmission of sounding reference signal (SRS) information

ABSTRACT

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information regarding one or more available slots associated with transmitting sounding reference signal (SRS) information. The UE may receive, from the base station, dynamic downlink communication including slot information for determining a select available slot from among the one or more available slots. The UE may transmit, to the base station, the SRS information during the select available slot, determined based at least in part on the slot information and the configuration information. Numerous other aspects are described.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/CN2021/140372, filed Dec. 22, 2021, entitled “DYNAMIC DETERMINATIONOF AVAILABLE SLOTS FOR TRANSMISSION OF SOUNDING REFERENCE SIGNAL (SRS)INFORMATION”, which claims priority to PCT Application No.PCT/CN2020/138232, filed on Dec. 22, 2020, entitled “DYNAMICDETERMINATION OF AVAILABLE SLOTS FOR TRANSMISSION OF SOUNDING REFERENCESIGNAL (SRS) INFORMATION,” and assigned to the assignee hereof. Thedisclosure of the prior Applications is considered part of and isincorporated by reference into this Patent Application in its entirety.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wirelesscommunication and to techniques and apparatuses for dynamicdetermination of available slots for transmission of sounding referencesignal (SRS) information.

BACKGROUND

Wireless communication systems are widely deployed to provide varioustelecommunication services such as telephony, video, data, messaging,and broadcasts. Typical wireless communication systems may employmultiple-access technologies capable of supporting communication withmultiple users by sharing available system resources (e.g., bandwidth,transmit power, or the like). Examples of such multiple-accesstechnologies include code division multiple access (CDMA) systems, timedivision multiple access (TDMA) systems, frequency-division multipleaccess (FDMA) systems, orthogonal frequency-division multiple access(OFDMA) systems, single-carrier frequency-division multiple access(SC-FDMA) systems, time division synchronous code division multipleaccess (TD-SCDMA) systems, and Long Term Evolution (LTE).LTE/LTE-Advanced is a set of enhancements to the Universal MobileTelecommunications System (UMTS) mobile standard promulgated by theThird Generation Partnership Project (3GPP).

A wireless network may include a number of base stations (BSs) that cansupport communication for a number of user equipment (UEs). A UE maycommunicate with a BS via the downlink and uplink. “Downlink” (or“forward link”) refers to the communication link from the BS to the UE,and “uplink” (or “reverse link”) refers to the communication link fromthe UE to the BS. As will be described in more detail herein, a BS maybe referred to as a Node B, a gNB, an access point (AP), a radio head, atransmit receive point (TRP), a New Radio (NR) BS, a 5G Node B, or thelike.

The above multiple access technologies have been adopted in varioustelecommunication standards to provide a common protocol that enablesdifferent user equipment to communicate on a municipal, national,regional, and even global level. NR, which may also be referred to as5G, is a set of enhancements to the LTE mobile standard promulgated bythe 3GPP. NR is designed to better support mobile broadband Internetaccess by improving spectral efficiency, lowering costs, improvingservices, making use of new spectrum, and better integrating with otheropen standards using orthogonal frequency division multiplexing (OFDM)with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDMand/or SC-FDM (e.g., also known as discrete Fourier transform spreadOFDM (DFT-s-OFDM)) on the uplink (UL), as well as supportingbeamforming, multiple-input multiple-output (MIMO) antenna technology,and carrier aggregation. As the demand for mobile broadband accesscontinues to increase, further improvements in LTE, NR, and other radioaccess technologies remain useful.

SUMMARY

In some aspects, a method of wireless communication performed by a userequipment (UE) includes receiving, from a base station, configurationinformation regarding one or more available slots associated withtransmitting sounding reference signal (SRS) information; receiving,from the base station, dynamic downlink communication including slotinformation for determining a select available slot from among the oneor more available slots; and transmitting, to the base station, the SRSinformation during the select available slot, determined based at leastin part on the slot information and the configuration information.

In some aspects, a UE for wireless communication includes a memory andone or more processors coupled to the memory, the memory and the one ormore processors configured to: receive, from a base station,configuration information regarding one or more available slotsassociated with transmitting SRS information; receive, from the basestation, dynamic downlink communication including slot information fordetermining a select available slot from among the one or more availableslots; and transmit, to the base station, the SRS information during theselect available slot, determined based at least in part on the slotinformation and the configuration information.

In some aspects, a non-transitory computer-readable medium storing a setof instructions for wireless communication includes one or moreinstructions that, when executed by one or more processors of a UE,cause the UE to: receive, from a base station, configuration informationregarding one or more available slots associated with transmitting SRSinformation; receive, from the base station, dynamic downlinkcommunication including slot information for determining a selectavailable slot from among the one or more available slots; and transmit,to the base station, the SRS information during the select availableslot, determined based at least in part on the slot information and theconfiguration information.

In some aspects, an apparatus for wireless communication includes meansfor receiving, from a base station, configuration information regardingone or more available slots associated with transmitting SRSinformation; means for receiving, from the base station, dynamicdownlink communication including slot information for determining aselect available slot from among the one or more available slots; andmeans for transmitting, to the base station, the SRS information duringthe select available slot, determined based at least in part on the slotinformation and the configuration information.

Aspects generally include a method, apparatus, system, computer programproduct, non-transitory computer-readable medium, user equipment, basestation, wireless communication device, and/or processing system assubstantially described herein with reference to and as illustrated bythe drawings and specification.

The foregoing has outlined rather broadly the features and technicaladvantages of examples according to the disclosure in order that thedetailed description that follows may be better understood. Additionalfeatures and advantages will be described hereinafter. The conceptionand specific examples disclosed may be readily utilized as a basis formodifying or designing other structures for carrying out the samepurposes of the present disclosure. Such equivalent constructions do notdepart from the scope of the appended claims. Characteristics of theconcepts disclosed herein, both their organization and method ofoperation, together with associated advantages will be better understoodfrom the following description when considered in connection with theaccompanying figures. Each of the figures is provided for the purposesof illustration and description, and not as a definition of the limitsof the claims.

While aspects are described in the present disclosure by illustration tosome examples, those skilled in the art will understand that suchaspects may be implemented in many different arrangements and scenarios.Techniques described herein may be implemented using different platformtypes, devices, systems, shapes, sizes, and/or packaging arrangements.For example, some aspects may be implemented via integrated chipembodiments or other non-module-component based devices (e.g., end-userdevices, vehicles, communication devices, computing devices, industrialequipment, retail/purchasing devices, medical devices, or artificialintelligence-enabled devices). Aspects may be implemented in chip-levelcomponents, modular components, non-modular components, non-chip-levelcomponents, device-level components, or system-level components. Devicesincorporating described aspects and features may include additionalcomponents and features for implementation and practice of claimed anddescribed aspects. For example, transmission and reception of wirelesssignals may include a number of components for analog and digitalpurposes (e.g., hardware components including antennas, radio frequency(RF) chains, power amplifiers, modulators, buffers, processors,interleavers, adders, or summers). It is intended that aspects describedherein may be practiced in a wide variety of devices, components,systems, distributed arrangements, or end-user devices of varying size,shape, and constitution.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can beunderstood in detail, a more particular description, briefly summarizedabove, may be had by reference to aspects, some of which are illustratedin the appended drawings. It is to be noted, however, that the appendeddrawings illustrate only certain typical aspects of this disclosure andare therefore not to be considered limiting of its scope, for thedescription may admit to other equally effective aspects. The samereference numbers in different drawings may identify the same or similarelements.

FIG. 1 is a diagram illustrating an example of a wireless network, inaccordance with the present disclosure.

FIG. 2 is a diagram illustrating an example of a base station incommunication with a user equipment (UE) in a wireless network, inaccordance with the present disclosure.

FIG. 3 is a diagram illustrating an example associated with dynamicdetermination of available slots for transmission of SRS information, inaccordance with the present disclosure.

FIG. 4 is a diagram illustrating an example associated with dynamicdetermination of available slots for transmission of SRS information, inaccordance with the present disclosure.

FIG. 5 is a diagram illustrating an example associated with dynamicdetermination of available slots for transmission of SRS information, inaccordance with the present disclosure.

FIG. 6 is a diagram illustrating an example associated with dynamicdetermination of available slots for transmission of SRS information, inaccordance with the present disclosure.

FIG. 7 is a diagram illustrating an example process associated withdynamic determination of available slots for transmission of SRSinformation, in accordance with the present disclosure.

FIG. 8 is a diagram illustrating an example apparatus associated withdynamic determination of available slots for transmission of SRSinformation, in accordance with the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafterwith reference to the accompanying drawings. This disclosure may,however, be embodied in many different forms and should not be construedas limited to any specific structure or function presented throughoutthis disclosure. Rather, these aspects are provided so that thisdisclosure will be thorough and complete, and will fully convey thescope of the disclosure to those skilled in the art. Based on theteachings herein, one skilled in the art should appreciate that thescope of the disclosure is intended to cover any aspect of thedisclosure disclosed herein, whether implemented independently of orcombined with any other aspect of the disclosure. For example, anapparatus may be implemented or a method may be practiced using anynumber of the aspects set forth herein. In addition, the scope of thedisclosure is intended to cover such an apparatus or method which ispracticed using other structure, functionality, or structure andfunctionality in addition to or other than the various aspects of thedisclosure set forth herein. It should be understood that any aspect ofthe disclosure disclosed herein may be embodied by one or more elementsof a claim.

Several aspects of telecommunication systems will now be presented withreference to various apparatuses and techniques. These apparatuses andtechniques will be described in the following detailed description andillustrated in the accompanying drawings by various blocks, modules,components, circuits, steps, processes, algorithms, or the like(collectively referred to as “elements”). These elements may beimplemented using hardware, software, or combinations thereof. Whethersuch elements are implemented as hardware or software depends upon theparticular application and design constraints imposed on the overallsystem.

It should be noted that while aspects may be described herein usingterminology commonly associated with a 5G or NR radio access technology(RAT), aspects of the present disclosure can be applied to other RATs,such as a 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G (e.g., 6G).

FIG. 1 is a diagram illustrating an example of a wireless network 100,in accordance with the present disclosure. The wireless network 100 maybe or may include elements of a 5G (NR) network and/or an LTE network,among other examples. The wireless network 100 may include a number ofbase stations 110 (shown as BS 110 a, BS 110 b, BS 110 c, and BS 110 d)and other network entities. A base station (BS) is an entity thatcommunicates with user equipment (UEs) and may also be referred to as anNR BS, a Node B, a gNB, a 5G node B (NB), an access point, a transmitreceive point (TRP), or the like. Each BS may provide communicationcoverage for a particular geographic area. In 3GPP, the term “cell” canrefer to a coverage area of a BS and/or a BS subsystem serving thiscoverage area, depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, afemto cell, and/or another type of cell. A macro cell may cover arelatively large geographic area (e.g., several kilometers in radius)and may allow unrestricted access by UEs with service subscription. Apico cell may cover a relatively small geographic area and may allowunrestricted access by UEs with service subscription. A femto cell maycover a relatively small geographic area (e.g., a home) and may allowrestricted access by UEs having association with the femto cell (e.g.,UEs in a closed subscriber group (CSG)). A BS for a macro cell may bereferred to as a macro BS. A BS for a pico cell may be referred to as apico BS. A BS for a femto cell may be referred to as a femto BS or ahome BS. In the example shown in FIG. 1 , a BS 110 a may be a macro BSfor a macro cell 102 a, a BS 110 b may be a pico BS for a pico cell 102b, and a BS 110 c may be a femto BS for a femto cell 102 c. A BS maysupport one or multiple (e.g., three) cells. The terms “eNB”, “basestation”, “NR BS”, “gNB”, “TRP”, “AP”, “node B”, “5G NB”, and “cell” maybe used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and thegeographic area of the cell may move according to the location of amobile BS. In some aspects, the BSs may be interconnected to one anotherand/or to one or more other BSs or network nodes (not shown) in thewireless network 100 through various types of backhaul interfaces, suchas a direct physical connection or a virtual network, using any suitabletransport network.

Wireless network 100 may also include relay stations. A relay station isan entity that can receive a transmission of data from an upstreamstation (e.g., a BS or a UE) and send a transmission of the data to adownstream station (e.g., a UE or a BS). A relay station may also be aUE that can relay transmissions for other UEs. In the example shown inFIG. 1 , a relay BS 110 d may communicate with macro BS 110 a and a UE120 d in order to facilitate communication between BS 110 a and UE 120d. A relay BS may also be referred to as a relay station, a relay basestation, a relay, or the like.

Wireless network 100 may be a heterogeneous network that includes BSs ofdifferent types, such as macro BSs, pico BSs, femto BSs, relay BSs, orthe like. These different types of BSs may have different transmit powerlevels, different coverage areas, and different impacts on interferencein wireless network 100. For example, macro BSs may have a high transmitpower level (e.g., 5 to 40 watts) whereas pico BSs, femto BSs, and relayBSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

A network controller 130 may couple to a set of BSs and may providecoordination and control for these BSs. Network controller 130 maycommunicate with the BSs via a backhaul. The BSs may also communicatewith one another, directly or indirectly, via a wireless or wirelinebackhaul.

UEs 120 (e.g., 120 a, 120 b, 120 c) may be dispersed throughout wirelessnetwork 100, and each UE may be stationary or mobile. A UE may also bereferred to as an access terminal, a terminal, a mobile station, asubscriber unit, a station, or the like. A UE may be a cellular phone(e.g., a smart phone), a personal digital assistant (PDA), a wirelessmodem, a wireless communication device, a handheld device, a laptopcomputer, a cordless phone, a wireless local loop (WLL) station, atablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook,a medical device or equipment, biometric sensors/devices, wearabledevices (smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart ring, smart bracelet)), anentertainment device (e.g., a music or video device, or a satelliteradio), a vehicular component or sensor, smart meters/sensors,industrial manufacturing equipment, a global positioning system device,or any other suitable device that is configured to communicate via awireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolvedor enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEsinclude, for example, robots, drones, remote devices, sensors, meters,monitors, and/or location tags, that may communicate with a basestation, another device (e.g., remote device), or some other entity. Awireless node may provide, for example, connectivity for or to a network(e.g., a wide area network such as Internet or a cellular network) via awired or wireless communication link. Some UEs may be consideredInternet-of-Things (IoT) devices, and/or may be implemented as NB-IoT(narrowband internet of things) devices. Some UEs may be considered aCustomer Premises Equipment (CPE). UE 120 may be included inside ahousing that houses components of UE 120, such as processor componentsand/or memory components. In some aspects, the processor components andthe memory components may be coupled together. For example, theprocessor components (e.g., one or more processors) and the memorycomponents (e.g., a memory) may be operatively coupled, communicativelycoupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks may be deployed in a givengeographic area. Each wireless network may support a particular RAT andmay operate on one or more frequencies. A RAT may also be referred to asa radio technology, an air interface, or the like. A frequency may alsobe referred to as a carrier, a frequency channel, or the like. Eachfrequency may support a single RAT in a given geographic area in orderto avoid interference between wireless networks of different RATs. Insome cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120 a and UE 120e) may communicate directly using one or more sidelink channels (e.g.,without using a base station 110 as an intermediary to communicate withone another). For example, the UEs 120 may communicate usingpeer-to-peer (P2P) communications, device-to-device (D2D)communications, a vehicle-to-everything (V2X) protocol (e.g., which mayinclude a vehicle-to-vehicle (V2V) protocol or avehicle-to-infrastructure (V2I) protocol), and/or a mesh network. Inthis case, the UE 120 may perform scheduling operations, resourceselection operations, and/or other operations described elsewhere hereinas being performed by the base station 110.

Devices of wireless network 100 may communicate using theelectromagnetic spectrum, which may be subdivided based on frequency orwavelength into various classes, bands, channels, or the like. Forexample, devices of wireless network 100 may communicate using anoperating band having a first frequency range (FR1), which may span from410 MHz to 7.125 GHz, and/or may communicate using an operating bandhaving a second frequency range (FR2), which may span from 24.25 GHz to52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred toas mid-band frequencies. Although a portion of FR1 is greater than 6GHz, FR1 is often referred to as a “sub-6 GHz” band. Similarly, FR2 isoften referred to as a “millimeter wave” band despite being differentfrom the extremely high frequency (EHF) band (30 GHz-300 GHz) which isidentified by the International Telecommunications Union (ITU) as a“millimeter wave” band. Thus, unless specifically stated otherwise, itshould be understood that the term “sub-6 GHz” or the like, if usedherein, may broadly represent frequencies less than 6 GHz, frequencieswithin FR1, and/or mid-band frequencies (e.g., greater than 7.125 GHz).Similarly, unless specifically stated otherwise, it should be understoodthat the term “millimeter wave” or the like, if used herein, may broadlyrepresent frequencies within the EHF band, frequencies within FR2,and/or mid-band frequencies (e.g., less than 24.25 GHz). It iscontemplated that the frequencies included in FR1 and FR2 may bemodified, and techniques described herein are applicable to thosemodified frequency ranges.

As indicated above, FIG. 1 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 1 .

FIG. 2 is a diagram illustrating an example 200 of a base station 110 incommunication with a UE 120 in a wireless network 100, in accordancewith the present disclosure. Base station 110 may be equipped with Tantennas 234 a through 234 t, and UE 120 may be equipped with R antennas252 a through 252 r, where in general T≥1 and R≥1.

At base station 110, a transmit processor 220 may receive data from adata source 212 for one or more UEs, select one or more modulation andcoding schemes (MCS) for each UE based at least in part on channelquality indicators (CQIs) received from the UE, process (e.g., encodeand modulate) the data for each UE based at least in part on the MCS(s)selected for the UE, and provide data symbols for all UEs. Transmitprocessor 220 may also process system information (e.g., for semi-staticresource partitioning information (SRPI)) and control information (e.g.,CQI requests, grants, and/or upper layer signaling) and provide overheadsymbols and control symbols. Transmit processor 220 may also generatereference symbols for reference signals (e.g., a cell-specific referencesignal (CRS) or a demodulation reference signal (DMRS)) andsynchronization signals (e.g., a primary synchronization signal (PSS) ora secondary synchronization signal (SSS)). A transmit (TX)multiple-input multiple-output (MIMO) processor 230 may perform spatialprocessing (e.g., precoding) on the data symbols, the control symbols,the overhead symbols, and/or the reference symbols, if applicable, andmay provide T output symbol streams to T modulators (MODs) 232 a through232 t. Each modulator 232 may process a respective output symbol stream(e.g., for OFDM) to obtain an output sample stream. Each modulator 232may further process (e.g., convert to analog, amplify, filter, andupconvert) the output sample stream to obtain a downlink signal. Tdownlink signals from modulators 232 a through 232 t may be transmittedvia T antennas 234 a through 234 t, respectively.

At UE 120, antennas 252 a through 252 r may receive the downlink signalsfrom base station 110 and/or other base stations and may providereceived signals to demodulators (DEMODs) 254 a through 254 r,respectively. Each demodulator 254 may condition (e.g., filter, amplify,downconvert, and digitize) a received signal to obtain input samples.Each demodulator 254 may further process the input samples (e.g., forOFDM) to obtain received symbols. A MIMO detector 256 may obtainreceived symbols from all R demodulators 254 a through 254 r, performMIMO detection on the received symbols if applicable, and providedetected symbols. A receive processor 258 may process (e.g., demodulateand decode) the detected symbols, provide decoded data for UE 120 to adata sink 260, and provide decoded control information and systeminformation to a controller/processor 280. The term“controller/processor” may refer to one or more controllers, one or moreprocessors, or a combination thereof. A channel processor may determinea reference signal received power (RSRP) parameter, a received signalstrength indicator (RSSI) parameter, a reference signal received quality(RSRQ) parameter, and/or a CQI parameter, among other examples. In someaspects, one or more components of UE 120 may be included in a housing284.

Network controller 130 may include communication unit 294,controller/processor 290, and memory 292. Network controller 130 mayinclude, for example, one or more devices in a core network. Networkcontroller 130 may communicate with base station 110 via communicationunit 294.

Antennas (e.g., antennas 234 a through 234 t and/or antennas 252 athrough 252 r) may include, or may be included within, one or moreantenna panels, antenna groups, sets of antenna elements, and/or antennaarrays, among other examples. An antenna panel, an antenna group, a setof antenna elements, and/or an antenna array may include one or moreantenna elements. An antenna panel, an antenna group, a set of antennaelements, and/or an antenna array may include a set of coplanar antennaelements and/or a set of non-coplanar antenna elements. An antennapanel, an antenna group, a set of antenna elements, and/or an antennaarray may include antenna elements within a single housing and/orantenna elements within multiple housings. An antenna panel, an antennagroup, a set of antenna elements, and/or an antenna array may includeone or more antenna elements coupled to one or more transmission and/orreception components, such as one or more components of FIG. 2 .

On the uplink, at UE 120, a transmit processor 264 may receive andprocess data from a data source 262 and control information (e.g., forreports that include RSRP, RSSI, RSRQ, and/or CQI) fromcontroller/processor 280. Transmit processor 264 may also generatereference symbols for one or more reference signals. The symbols fromtransmit processor 264 may be precoded by a TX MIMO processor 266 ifapplicable, further processed by modulators 254 a through 254 r (e.g.,for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In someaspects, a modulator and a demodulator (e.g., MOD/DEMOD 254) of the UE120 may be included in a modem of the UE 120. In some aspects, the UE120 includes a transceiver. The transceiver may include any combinationof antenna(s) 252, modulators and/or demodulators 254, MIMO detector256, receive processor 258, transmit processor 264, and/or TX MIMOprocessor 266. The transceiver may be used by a processor (e.g.,controller/processor 280) and memory 282 to perform aspects of any ofthe methods described herein (for example, as described with referenceto FIGS. 3-8 ).

At base station 110, the uplink signals from UE 120 and other UEs may bereceived by antennas 234, processed by demodulators 232, detected by aMIMO detector 236 if applicable, and further processed by a receiveprocessor 238 to obtain decoded data and control information sent by UE120. Receive processor 238 may provide the decoded data to a data sink239 and the decoded control information to controller/processor 240.Base station 110 may include communication unit 244 and communicate tonetwork controller 130 via communication unit 244. Base station 110 mayinclude a scheduler 246 to schedule UEs 120 for downlink and/or uplinkcommunications. In some aspects, a modulator and a demodulator (e.g.,MOD/DEMOD 232) of the base station 110 may be included in a modem of thebase station 110. In some aspects, the base station 110 includes atransceiver. The transceiver may include any combination of antenna(s)234, modulators and/or demodulators 232, MIMO detector 236, receiveprocessor 238, transmit processor 220, and/or TX MIMO processor 230. Thetransceiver may be used by a processor (e.g., controller/processor 240)and memory 242 to perform aspects of any of the methods described herein(for example, as described with reference to FIGS. 3-8 ).

Controller/processor 240 of base station 110, controller/processor 280of UE 120, and/or any other component(s) of FIG. 2 may perform one ormore techniques associated with dynamic determination of available slotsfor transmission of sounding reference signal (SRS) information, asdescribed in more detail elsewhere herein. For example,controller/processor 240 of base station 110, controller/processor 280of UE 120, and/or any other component(s) of FIG. 2 may perform or directoperations of, for example, process 700 of FIG. 7 and/or other processesas described herein. Memories 242 and 282 may store data and programcodes for base station 110 and UE 120, respectively. In some aspects,memory 242 and/or memory 282 may include a non-transitorycomputer-readable medium storing one or more instructions (e.g., codeand/or program code) for wireless communication. For example, the one ormore instructions, when executed (e.g., directly, or after compiling,converting, and/or interpreting) by one or more processors of the basestation 110 and/or the UE 120, may cause the one or more processors, theUE 120, and/or the base station 110 to perform or direct operations of,for example, process 700 of FIG. 7 and/or other processes as describedherein. In some aspects, executing instructions may include running theinstructions, converting the instructions, compiling the instructions,and/or interpreting the instructions, among other examples.

In some aspects, the UE (e.g., UE 120) includes means for receiving,from a base station, configuration information regarding one or moreavailable slots associated with transmitting SRS information; means forreceiving, from the base station, dynamic downlink communicationincluding slot information for determining a select available slot fromamong the one or more available slots; and/or means for transmitting, tothe base station, the SRS information during the select available slot,determined based at least in part on the slot information and theconfiguration information. The means for the UE to perform operationsdescribed herein may include, for example, one or more of antenna 252,demodulator 254, MIMO detector 256, receive processor 258, transmitprocessor 264, TX MIMO processor 266, modulator 254,controller/processor 280, or memory 282.

In some aspects, the UE includes means for determining the selectavailable slot based at least in part on a slot factor, associated witha format related to a given slot, and an initial available slot value,the slot factor being received via the dynamic downlink communicationand the initial available slot value being received via theconfiguration information.

While blocks in FIG. 2 are illustrated as distinct components, thefunctions described above with respect to the blocks may be implementedin a single hardware, software, or combination component or in variouscombinations of components. For example, the functions described withrespect to the transmit processor 264, the receive processor 258, and/orthe TX MIMO processor 266 may be performed by or under the control ofcontroller/processor 280.

As indicated above, FIG. 2 is provided as an example. Other examples maydiffer from what is described with regard to FIG. 2 .

A UE may conduct data communication with a BS in a wireless network suchas an LTE network or a 5G/NR network. The data communication may includedownlink communications from the BS to the UE and uplink communicationsfrom the UE to the BS. The UE may receive the downlink communicationsduring a slot reserved for downlink communications (e.g., a downlinkslot) and may transmit the uplink communications during a slot reservedfor uplink communications (e.g., an uplink slot).

To adequately receive the uplink communications from the UE, the BS mayestimate a measure of quality associated with the uplink communications.To enable the BS to estimate the measure of quality, the UE may transmitSRS information to the BS. Based on receiving the SRS information, theBS may estimate the measure of quality associated with the uplinkcommunications. The SRS information may include SRS resources configuredby the BS to enable the UE to perform, for example, antenna switchingoperations, codebook-based operations, non-codebook-based operations,beam management operations, or the like.

During the data communication, as shown in example 300 of FIG. 3 , theUE may receive downlink control information (DCI) to trigger the UE totransmit the SRS information. The UE may receive the DCI during a givendownlink slot (D) and may transmit the SRS information during a givenuplink slot (U) that occurs a fixed number of SRS offset slots after thegiven downlink slot. The given uplink slot may be referred to as atransmission slot. The fixed number of SRS offset slots may bepreconfigured by the BS during initiation of the data communicationbetween the BS and the UE.

In some cases, after transmitting the DCI and before receiving the SRSinformation, the BS may reserve the transmission slot for downlinkcommunications. In other words, the BS may convert the transmission slotfrom being an uplink slot U to being a downlink slot D. In this case,the UE may not be able to transmit the SRS information during thetransmission slot. Also, due to the fixed number of SRS offset slots,the UE may not be able to transmit the SRS information during anotheruplink slot. As a result, the BS may not adequately receive the SRSinformation from the UE.

In some cases, the BS may be communicating with a plurality of UEs. Toreceive respective SRS information from the plurality of UEs during atransmission slot, as shown in example 400 of FIG. 4 , the BS maytransmit a plurality of DCIs during a given downlink slot, which mayoccur the fixed number of SRS offset slots before the transmission slot.Transmitting the plurality of DCIs during the given downlink slot maycause DCI congestion. Additionally, transmission of the respective SRSinformation by the plurality of UEs during the transmission slot mayresult in interference among the SRS information. As a result, the BSmay not adequately receive the respective SRS information from theplurality of UEs.

Without adequately receiving the SRS information, the BS may not be ableto adequately estimate the measure of quality associated with the uplinkcommunications. As a result, the BS may not be able to adequatelyreceive uplink communications, and the data communication between the UE(or the plurality of UEs) and the BS may experience an interruption or astoppage. Resolving the interruption or stoppage may inefficientlyconsume UE resources (e.g., amount of processing, utilization of memory,power consumption, or the like) and network resources (e.g., bandwidth,management resources, or the like) that could be more efficientlyutilized to perform other tasks related to the data communication.

Various aspects of techniques and apparatuses described herein mayenable dynamic determination of available slots for transmission of SRSinformation. In some aspects, during initiation of a data communicationbetween a BS and a UE, the UE may receive configuration informationassociated with one or more available slots associated with transmittingthe SRS information. During the data communication, the UE may receivedynamic signaling (e.g., medium access control (MAC) signaling includinga control element (MAC CE), DCI signaling, or a combination thereof)including slot information to enable the UE to determine a selectavailable slot, from among the one or more available slots, during whichthe SRS information is to be transmitted. The slot information includedin the dynamic signaling may accommodate the BS having converted atransmission slot (an uplink slot) to a downlink slot. The UE mayutilize the select available slot to transmit the SRS information.Additionally, the BS may transmit respective DCI to a respectiveplurality of UEs during different slots to trigger transmission ofrespective SRS information during respective select available slots,thereby avoiding DCI congestion and/or interference among the SRSinformation. In this way, the BS may adequately receive the SRSinformation and may adequately estimate a measure of quality associatedwith uplink communications. As a result, the BS may adequately receivethe uplink communications from the UE, and the data communicationbetween the UE and the BS may continue uninterrupted. Additionally,transmitting the SRS information during the select available slot mayenable efficient utilization of UE resources (e.g., amount ofprocessing, utilization of memory, or the like) and network resources(e.g., bandwidth, subchannels, or the like).

In some aspects, a UE may receive, from a base station, configurationinformation regarding one or more available slots associated withtransmitting SRS information; receive, from the base station, dynamicdownlink communication including slot information for determining aselect available slot from among the one or more available slots; andtransmit, to the base station, the SRS information during the selectavailable slot, determined based at least in part on the slotinformation and the configuration information. In this way, datacommunication between the UE and the BS may be improved.

FIG. 5 is a diagram illustrating an example 500 associated with dynamicdetermination of available slots for transmission of SRS information, inaccordance with the present disclosure. FIG. 5 shows a UE 120 and a BS110 conducting data communication in, for example, an LTE network or a5G/NR network. The data communication may include downlinkcommunications from the BS 110 to the UE 120 and may include uplinkcommunications from the UE 120 to the BS 110.

As shown by reference number 510, the BS 110 may transmit, and the UE120 may receive, configuration information at a beginning (e.g., duringinitiation) of the data communication. In some aspects, the UE 120 mayreceive the configuration information from a device other than BS 110(e.g., from another base station). In some aspects, the UE 120 mayreceive the configuration information via, for example, a controlchannel (e.g., a physical downlink control channel (PDCCH)) between theUE 120 and the BS 110. The configuration information may be communicatedvia radio resource control (RRC) signaling, MAC signaling (e.g., MACCE), DCI signaling, or a combination thereof (e.g., RRC configuration ofa set of values for a parameter and DCI indication of a selected valueof the parameter).

In some aspects, the configuration information may include informationassociated with configuring the UE 120 with one or more SRS resourcesets, each SRS resource set comprising a respective one or more SRSresources (e.g., the configured SRS resources). The configured SRSresources may be utilized by the UE 120 to perform, for example, SRSsignaling antenna switching operations, codebook-based operations,non-codebook-based operations, beam management operations, or the like.

As shown by reference number 520, the configuration information mayinclude SRS configuration information associated with transmitting SRSinformation. As shown by reference number 530, based at least in part onthe SRS configuration information, the UE 120 may configure the UE 120to transmit the SRS information.

In some aspects, the configuration information may include an indicationof, for example, one or more configuration parameters for the UE 120 touse to configure the UE 120 for the data communication. In some aspects,the SRS configuration information may include/indicate informationassociated with transmitting SRS information. In some aspects, the SRSconfiguration information may indicate a fixed number of SRS offsetslots. The fixed number may be an integer value from, for example, 1through 32. If no value for the fixed number of SRS offset slots isindicated, then the UE 120 may determine the value for the fixed numberof SRS offset slots to be 0. Further, the SRS configuration informationmay indicate that the UE 120 is to transmit the SRS information duringan uplink slot that occurs the fixed number of SRS offset slots after areference slot.

The SRS configuration information may also include information regardingone or more available slots associated with transmitting the SRSinformation. In some aspects, the information regarding the one or moreavailable slots may include a list of integer values representingrespective select numbers of offset slots to be used by the UE 120 todetermine a select available slot from among the one or more availableslots. For instance, the SRS configuration information may indicate thatthe UE 120 is to transmit the SRS information during the selectavailable slot, which occurs a select number (e.g., t) of offset slotsafter the reference slot. Based at least in part on the SRSconfiguration information, the UE 120 may transmit the SRS information toffset slots after the reference slot. In some aspects, the UE maytransmit the SRS information t+1 offset slots after the reference slot.

In some aspects, as shown in example 600 of FIG. 6 , the list of integervalues (which may be referred to as “t-values”) representing therespective select numbers of offset slots may be included in one or moreavailable-slot lists. In some aspects, for example, an available-slotlist may include a plurality of t-values representing respective numberst of offset slots to be utilized by the UE 120 to determine the selectavailable slot. In some aspects, alternatively to transmitting the SRSinformation during the select available slot that occurs the fixednumber of SRS offset slots after the reference slot, the SRSconfiguration information may indicate that the UE 120 is to transmitthe SRS information during the select available slot, which occurs theselect number of offset slots after the reference slot. In some aspects,a t-value may represent a number of slots between the reference slot andthe select available slot. For example, a first (e.g., select) t-valueof a set of t-values indicated by an available-slot list may indicate anumber of slots between the reference slot and the select available slotsuch as in cases in which the number of slots between the reference slotand the select available slot is n−1 (where t=n). In other aspects, at-value may represent a number of slots between the reference slot andthe select available slot by corresponding to a number of offset slotsto be utilized by the UE 120 in determining the select available slot.

For instance, as shown in example 600 of FIG. 6 , an available-slot listmay include N integer values (e.g., V1, V2, V3, V4, V5, V6, V7, . . . ,VN) representing respective select numbers of offset slots to beutilized by the UE 119 to determine the select available slot. Eachinteger value is associated with a respective position in theavailable-slot list. For instance, V1 is associated with position 1, V2is associated with position 2, . . . , and VN is associated withposition N. In some aspects, N may have an integer value from 1 through128.

In some aspects, the SRS configuration information may enable the UE 120to configure the UE 120 to determine the select available slot and totransmit the SRS information during the select available slot. Forinstance, the SRS configuration information may indicate that the UE 120is to determine the select available slot based at least in part on slotinformation and/or on the SRS configuration information. The slotinformation may be included in dynamic signaling (e.g., dynamic downlinkcommunication), which may be received from the BS 110 during the datacommunication. The dynamic signaling may include the MAC CE, the DCI, ora combination thereof.

In some aspects, the SRS configuration information and/or the slotinformation may indicate that the reference slot is a slot during whichthe DCI, that triggers transmission of the SRS information, is received.In some aspects, the SRS configuration information and/or the slotinformation may indicate that the reference slot is a given slot (e.g.,a slot indicated by the legacy triggering offset) configured by the BS110.

In some aspects, the slot information may indicate the respectiveposition of an integer value in the available-slot list. Based at leastin part on the indicated respective position, the UE 120 may determinethe select number of offset slots. For instance, when the slotinformation indicates position 3, the UE 120 may determine that the SRSinformation is to be transmitted during the select available slot, whichoccurs V3 slots after the reference slot. Similarly, when the slotinformation indicates position N, the UE 120 may determine that the SRSinformation is to be transmitted during the select available slot, whichoccurs VN slots after the reference slot.

In some aspects, the slot information may be received via the dynamicsignaling (e.g., MAC CE and/or DCI) transmitted from the BS 110 to theUE 120. When the slot information is received via DCI, one or more bitsincluded in the DCI may indicate the respective position in theavailable-slot list. In some aspects, a quantity (e.g., x) of the one ormore bits may be based at least in part on the integer value of N. Insome aspects, x number of bits may be used when the available-slot listincludes 2^(x) positions (e.g., N=2^(x)). For instance, when the valueof N=2 (e.g., there are two integer values, V1 and V2, in theavailable-slot list), the quantity of x may be 1; when the value of N=4(e.g., there are four integer values, V1 through V4, in theavailable-slot list), the quantity of x may be 2; when the value of N=8(e.g., there are eight integer values, V1 through V8, in theavailable-slot list), the quantity of x may be 3, and so on.

In some aspects, the UE 120 may determine the quantity of the one ormore bits that are used by the DCI to indicate the respective positionin the available-slot list. The quantity of the one or more bits may bebased at least in part on a maximum number of available slots associatedwith a set of available slots of a plurality of sets of available slots.In some aspects, the plurality of sets of available slots may beassociated with at least one component carrier. For example, in someaspects, a plurality of SRS resource sets may be configured across anumber of component carriers, and each SRS resource set may have acorresponding available-slot list that includes a corresponding set oft-values. Thus, the plurality of SRS resource sets may correspond to aplurality of sets of t-values. The UE 120 may determine the quantity ofbits used by the DCI to indicate respective positions in theavailable-slot lists based at least in part on a scheduled componentcarrier configuration of t-values (offset slot values, as indicatedabove). For example, the UE 120 may determine the quantity of bits basedat least in part on a set of t-values, of the plurality of sets oft-values, that has a maximum number of t-values as compared to the othersets of t-values. In some aspects, the UE 120 may determine the quantityof bits based at least in part on the maximum number of t-values acrossall configured component carriers. In some aspects, the UE 120 maydetermine the quantity of bits per component carrier based at least inpart on a set of t-values having the maximum number of t-values of thesets of t-values associated with a specified component carrier.

In some aspects, the SRS configuration information may indicate aplurality of available-slot lists. In this case, slot information may bereceived via the MAC CE, which may indicate a select available-slotlist, from among the plurality of available-slot lists, to be utilizedby the UE 120 to determine the select available slot. Further, one ormore bits in the MAC CE may indicate the respective position in theselect available-slot list. Based at least in part on the indicatedrespective position, the UE 120 may determine the select number ofoffset slots, as discussed above. Alternatively, after the selectavailable-slot list is indicated by the MAC CE, the UE 120 may receiveDCI including the x number of bits that indicate the respective positionin the select available-slot list. Based at least in part on theindicated respective position by the MAC CE and/or DCI, the UE 120 maydetermine the select number of offset slots, as discussed above.Utilizing the MAC CE to indicate at least the select available-slotlist, from among the plurality of available-slot lists, may enable theBS 110 to utilize a reduced number of bits in the DCI for indicating theslot information associated with transmitting the SRS information.

In some aspects, the SRS configuration information may enable the UE 120to configure the UE 120 to transmit the SRS information based at leastin part on a time of receipt of the dynamic signaling (e.g., MAC CEand/or DCI). For instance, the UE 120 may transmit the SRS information,based at least in part on the slot information included in a MAC CE,after a MAC CE duration of time. Similarly, the UE 120 may transmit theSRS information, based at least in part on the slot information includedin DCI, after a DCI duration of time. In some aspects, the MAC CE/DCIduration of time may be, for example, 3 milliseconds after receiving theMAC CE/DCI. In a situation where the UE 120 receives the DCI, indicatingthe respective position in the select available-slot list, prior to anexpiration of the MAC CE duration of time, the UE 120 may utilize adefault available-slot list, from among the plurality of available-slotlists, as the select available-slot list. In some aspects, in asituation where the UE 120 receives the DCI, indicating the respectiveposition in the select available-slot list, prior to the expiration ofthe MAC CE duration of time, the UE 120 may utilize a previouslyutilized available-slot list, from among the plurality of available-slotlists, as the select available-slot list.

In some aspects, the SRS configuration information may indicate anavailable-slot list including a plurality of integer values representingthe respective select numbers of offset slots associated with the one ormore available slots. In this case, the MAC CE and/or DCI received viadownlink signaling may indicate a select subset of a plurality ofinteger values, from among the plurality of integer values, to beutilized by the UE 120 to determine the select available slot. Further,one or more bits in the MAC CE and/or DCI may indicate the respectiveposition in the select subset of the plurality of integer values. Basedat least in part on the indicated respective position, the UE 120 maydetermine the select number of offset slots, as discussed above.Utilizing the MAC CE to indicate at least the select subset of integervalues, from among the plurality of integer values, may enable the BS110 to avoid using the DCI for indicating the slot informationassociated with transmitting the SRS information, thereby avoiding DCIcongestion (or PDCCH congestion).

In some aspects, the SRS configuration information may enable the UE 120to configure the UE 120 to transmit the SRS information based at leastin part on a time of receipt of the dynamic signal (e.g., MAC CE and/orDCI). For instance, the UE 120 may transmit the SRS information, basedat least in part on the slot information included in the MAC CE, afterthe MAC CE duration of time. Similarly, the UE 120 may transmit the SRSinformation, based at least in part on the slot information included inDCI, after a DCI duration of time. In some aspects, the MAC CE and/orDCI duration of time may be, for example, 3 milliseconds after receivingthe MAC CE and/or DCI. In a situation where the UE 120 receives the DCI,triggering transmission of the SRS information, prior to the expirationof the MAC CE duration of time, the UE 120 may utilize a default subsetof integer values, from among the plurality of integer values, as theselect subset of integer values. In some aspects, in a situation wherethe UE 120 receives the DCI, triggering transmission of the SRSinformation, prior to the expiration of the MAC CE duration of time, theUE 120 may utilize a previously utilized subset of integer values, fromamong the plurality of integer values, as the select subset of integervalues.

In some aspects, the SRS configuration information and/or the slotinformation may enable the UE 120 to calculate (e.g., determine) theselect number of offset slots. In some aspects, the SRS configurationinformation and/or the slot information may include a slot factor valueand/or an initial available slot value, and may enable the UE 120 tocalculate the select number (e.g., t) of offset slots based at least inpart on the initial available slot value (e.g., V1, V2, . . . , VN) andthe slot factor value. In some aspects, the relationship may beexpressed as t=(initial available slot value*slot factor value). The UE120 may transmit the SRS information during the select available slotthat occurs t offset slots after the reference slot. In some aspects,the UE may transmit the SRS information during the select available slotthat occurs t+1 offset slots after the reference slot. In some aspects,the slot factor value may be associated with a format related to a givenslot. For instance, the slot factor may indicate whether the given slotis an uplink slot (e.g., U) reserved for uplink communications from theUE 120 to the BS 110, or is a downlink slot (e.g., D) reserved fordownlink communications from the BS 110 to the UE 120.

When the slot information indicates position 2 and a slot factor valueof 2, the UE 120 may calculate the select number (e.g., t) of offsetslots as V2*2. In a situation where the value of V2 is equal to 4, theUE 120 may calculate the select number of offset slots as 4*2=8. The UE120 may transmit the SRS information during the select available slotthat occurs 8 offset slots after the reference slot. In some aspects,the UE may transmit the SRS information during the select available slotthat occurs 9 (e.g., t+1) offset slots after the reference slot.

As shown by reference number 540, the UE 120 may transmit the SRSinformation based at least in part on receiving the configurationinformation, the SRS configuration information, and/or the slotinformation, as discussed above. In some aspects, the UE 120 may utilizeincluded transmission circuitry to transmit the SRS information and mayutilize included reception circuitry to receive the configurationinformation, the SRS configuration information, and/or the slotinformation. The transmission circuitry may include, for example, one ormore components (e.g., transmit processor 264, TX MIMO processor 266,modulator 254, and/or antennas 252) and the reception circuitry mayinclude, for example, one or more components (e.g., receive processor258, MIMO detector 256, demodulator 254, and/or antennas 252), asdiscussed above with respect to FIG. 2 . In some aspects, the UE 120 mayinclude the UE 120 discussed with respect to FIG. 2 .

By utilizing the dynamic determination of available slots fortransmission of SRS information, as discussed herein, a UE may utilizethe select (e.g., optimal) available slot to transmit the SRSinformation. In this way, the UE may enable the BS to adequately receivethe SRS information and to adequately estimate a measure of qualityassociated with uplink communications. As a result, the BS mayadequately receive the uplink communications from the UE and the datacommunication between the UE and the BS may continue uninterrupted.Additionally, transmitting the SRS information during the selectavailable slot may enable efficient utilization of UE resources (e.g.,amount of processing, utilization of memory, or the like) and networkresources (e.g., bandwidth, subchannels, or the like) and datacommunication between the UE and the BS may be improved.

As indicated above, FIGS. 5 and 6 are provided as examples. Otherexamples may differ from what is described with regard to FIGS. 5 and 6.

FIG. 7 is a diagram illustrating an example process 700 performed, forexample, by a UE (e.g., UE 120), in accordance with the presentdisclosure. Example process 700 is an example where the UE performsoperations associated with dynamic determination of available slots fortransmission of SRS information.

As shown in FIG. 7 , in some aspects, process 700 may include receiving,from a base station, configuration information regarding one or moreavailable slots associated with transmitting SRS information (block710). For example, the UE (e.g., using reception component 802, depictedin FIG. 8 ) may receive, from a base station, configuration informationregarding one or more available slots associated with transmitting SRSinformation, as described above.

As further shown in FIG. 7 , in some aspects, process 700 may includereceiving, from the base station, dynamic downlink communicationincluding slot information for determining a select available slot fromamong the one or more available slots (block 720). For example, the UE(e.g., using reception component 802, depicted in FIG. 8 ) may receive,from the base station, dynamic downlink communication including slotinformation for determining a select available slot from among the oneor more available slots, as described above.

As further shown in FIG. 7 , in some aspects, process 700 may includetransmitting, to the base station, the SRS information during the selectavailable slot, determined based at least in part on the slotinformation and the configuration information (block 730). For example,the UE (e.g., using transmission component 804, depicted in FIG. 8 ) maytransmit, to the base station, the SRS information during the selectavailable slot, determined based at least in part on the slotinformation and the configuration information, as described above.

Process 700 may include additional aspects, such as any single aspect orany combination of aspects described below and/or in connection with oneor more other processes described elsewhere herein.

In a first aspect, the one or more available slots are included in anavailable-slot list.

In a second aspect, alone or in combination with the first aspect,process 700 includes determining the select available slot based atleast in part on a slot factor, associated with a format related to agiven slot, and an initial available slot value, the slot factor beingreceived via the dynamic downlink communication and the initialavailable slot value being received via the configuration information.

In a third aspect, alone or in combination with one or more of the firstand second aspects, the slot information includes a slot factorindicating whether a given slot is an uplink slot reserved for uplinkcommunications from the UE to the base station or is a downlink slotreserved for downlink communications from the base station to the UE.

In a fourth aspect, alone or in combination with one or more of thefirst through third aspects, the dynamic downlink communication includesDCI received during a reference slot, the DCI including the slotinformation.

In a fifth aspect, alone or in combination with one or more of the firstthrough fourth aspects, the select available slot occurs a givenquantity of slots after a reference slot, indicated by the configurationinformation.

In a sixth aspect, alone or in combination with one or more of the firstthrough fifth aspects, process 700 includes the dynamic downlinkcommunication includes DCI, and one or more bits included in the DCIindicate the slot information.

In a seventh aspect, alone or in combination with one or more of thefirst through sixth aspects, process 700 includes the dynamic downlinkcommunication includes DCI, and one or more bits included in the DCIindicate the slot information, a quantity of the one or more bits beingbased at least in part on a quantity of the one or more available slots.

In an eighth aspect, alone or in combination with one or more of thefirst through seventh aspects, the quantity of the one or more bits isbased at least in part on a maximum number of available slots associatedwith a set of available slots of a plurality of sets of available slots.

In a ninth aspect, alone or in combination with one or more of the firstthrough eighth aspects, the plurality of sets of available slots areassociated with at least one component carrier.

In a tenth aspect, alone or in combination with one or more of the firstthrough ninth aspects, process 700 includes the one or more availableslots are included in a plurality of available-slot lists, and thedynamic downlink communication includes a MAC CE and DCI, the MAC CEindicating a given available-slot list from among the plurality ofavailable-slot lists and the DCI including the slot informationassociated with determining the available slot from the givenavailable-slot list indicated by the MAC CE.

In an eleventh aspect, alone or in combination with one or more of thefirst through tenth aspects, process 700 includes the one or moreavailable slots are included in an available-slot list, and the dynamicdownlink communication includes a MAC CE and DCI, the MAC CE indicatinga subset of the one or more available slots and the DCI including theslot information associated with determining the available slot from thesubset of the one or more available slots indicated by the MAC CE.

Although FIG. 7 shows example blocks of process 700, in some aspects,process 700 may include additional blocks, fewer blocks, differentblocks, or differently arranged blocks than those depicted in FIG. 7 .Additionally, or alternatively, two or more of the blocks of process 700may be performed in parallel.

FIG. 8 is a block diagram of an example apparatus 800 for wirelesscommunication. The apparatus 800 may be a UE, or a UE may include theapparatus 800. In some aspects, the apparatus 800 includes a receptioncomponent 802 and a transmission component 804, which may be incommunication with one another (for example, via one or more busesand/or one or more other components). As shown, the apparatus 800 maycommunicate with another apparatus 806 (such as a UE, a base station, oranother wireless communication device) using the reception component 802and the transmission component 804. As further shown, the apparatus 800may include one or more of a determination component 808, among otherexamples.

In some aspects, the apparatus 800 may be configured to perform one ormore operations described herein in connection with FIGS. 3-6 .Additionally, or alternatively, the apparatus 800 may be configured toperform one or more processes described herein, such as process 700 ofFIG. 7 . In some aspects, the apparatus 800 and/or one or morecomponents shown in FIG. 8 may include one or more components of the UEdescribed above in connection with FIG. 2 . Additionally, oralternatively, one or more components shown in FIG. 8 may be implementedwithin one or more components described above in connection with FIG. 2. Additionally, or alternatively, one or more components of the set ofcomponents may be implemented at least in part as software stored in amemory. For example, a component (or a portion of a component) may beimplemented as instructions or code stored in a non-transitorycomputer-readable medium and executable by a controller or a processorto perform the functions or operations of the component.

The reception component 802 may receive communications, such asreference signals, control information, data communications, or acombination thereof, from the apparatus 806. The reception component 802may provide received communications to one or more other components ofthe apparatus 800. In some aspects, the reception component 802 mayperform signal processing on the received communications (such asfiltering, amplification, demodulation, analog-to-digital conversion,demultiplexing, deinterleaving, de-mapping, equalization, interferencecancellation, or decoding, among other examples), and may provide theprocessed signals to the one or more other components of the apparatus806. In some aspects, the reception component 802 may include one ormore antennas, a demodulator, a MIMO detector, a receive processor, acontroller/processor, a memory, or a combination thereof, of the UEdescribed above in connection with FIG. 2 .

The transmission component 804 may transmit communications, such asreference signals, control information, data communications, or acombination thereof, to the apparatus 806. In some aspects, one or moreother components of the apparatus 806 may generate communications andmay provide the generated communications to the transmission component804 for transmission to the apparatus 806. In some aspects, thetransmission component 804 may perform signal processing on thegenerated communications (such as filtering, amplification, modulation,digital-to-analog conversion, multiplexing, interleaving, mapping, orencoding, among other examples), and may transmit the processed signalsto the apparatus 806. In some aspects, the transmission component 804may include one or more antennas, a modulator, a transmit MIMOprocessor, a transmit processor, a controller/processor, a memory, or acombination thereof, of the UE described above in connection with FIG. 2. In some aspects, the transmission component 804 may be co-located withthe reception component 802 in a transceiver.

The reception component 802 may receive, from a base station,configuration information regarding one or more available slotsassociated with transmitting SRS information. The reception component802 may receive, from the base station, dynamic downlink communicationincluding slot information for determining a select available slot fromamong the one or more available slots. The transmission component 804may transmit, to the base station, the SRS information during the selectavailable slot, determined based at least in part on the slotinformation and the configuration information.

The determination component 808 may determine the select available slotbased at least in part on a slot factor, associated with a formatrelated to a given slot, and an initial available slot value, the slotfactor being received via the dynamic downlink communication and theinitial available slot value being received via the configurationinformation.

The number and arrangement of components shown in FIG. 8 are provided asan example. In practice, there may be additional components, fewercomponents, different components, or differently arranged componentsthan those shown in FIG. 8 . Furthermore, two or more components shownin FIG. 8 may be implemented within a single component, or a singlecomponent shown in FIG. 8 may be implemented as multiple, distributedcomponents. Additionally, or alternatively, a set of (one or more)components shown in FIG. 8 may perform one or more functions describedas being performed by another set of components shown in FIG. 8 .

The following provides an overview of some aspects of the presentdisclosure:

Aspect 1: A method of wireless communication performed by a userequipment (UE), comprising: receiving, from a base station,configuration information regarding one or more available slotsassociated with transmitting sounding reference signal (SRS)information; receiving, from the base station, dynamic downlinkcommunication including slot information for determining a selectavailable slot from among the one or more available slots; andtransmitting, to the base station, the SRS information during the selectavailable slot, determined based at least in part on the slotinformation and the configuration information.

Aspect 2: The method of aspect 1, wherein the one or more availableslots are included in an available-slot list.

Aspect 3: The method of any of aspects 1-2, further comprising:determining the select available slot based at least in part on a slotfactor, associated with a format related to a given slot, and an initialavailable slot value, the slot factor being received via the dynamicdownlink communication and the initial available slot value beingreceived via the configuration information.

Aspect 4: The method of any of aspects 1-3, wherein the slot informationincludes a slot factor indicating whether a given slot is an uplink slotreserved for uplink communications from the UE to the base station or isa downlink slot reserved for downlink communications from the basestation to the UE.

Aspect 5: The method of any of aspects 1-4, wherein the dynamic downlinkcommunication includes downlink control information (DCI) receivedduring a reference slot, the DCI including the slot information.

Aspect 6: The method of any of aspects 1-5, wherein the select availableslot occurs a given quantity of slots after a reference slot, indicatedby the configuration information.

Aspect 7: The method of any of aspects 1-6, wherein the dynamic downlinkcommunication includes downlink control information (DCI), and one ormore bits included in the DCI indicate the slot information.

Aspect 8: The method of any of aspects 1-7, wherein the dynamic downlinkcommunication includes downlink control information (DCI), and one ormore bits included in the DCI indicate the slot information, a quantityof the one or more bits being based at least in part on a quantity ofthe one or more available slots.

Aspect 9: The method of any of aspects 1-8, wherein the quantity of theone or more bits is based at least in part on a maximum number ofavailable slots associated with a set of available slots of a pluralityof sets of available slots.

Aspect 10: The method of any of aspects 1-9, wherein the plurality ofsets of available slots are associated with at least one componentcarrier.

Aspect 11: The method of any of aspects 1-10, wherein the one or moreavailable slots are included in a plurality of available-slot lists, andthe dynamic downlink communication includes a medium access controlcontrol element (MAC CE) and downlink control information (DCI), the MACCE indicating a given available-slot list from among the plurality ofavailable-slot lists and the DCI including the slot informationassociated with determining the available slot from the givenavailable-slot list indicated by the MAC CE.

Aspect 12: The method of any of aspects 1-11, wherein the one or moreavailable slots are included in an available-slot list, and the dynamicdownlink communication includes a medium access control control element(MAC CE) and downlink control information (DCI), the MAC CE indicating asubset of the one or more available slots and the DCI including the slotinformation associated with determining the available slot from thesubset of the one or more available slots indicated by the MAC CE.

Aspect 13: An apparatus for wireless communication at a device,comprising a processor; memory coupled with the processor; andinstructions stored in the memory and executable by the processor tocause the apparatus to perform the method of one or more aspects ofaspects 1-12.

Aspect 14: A device for wireless communication, comprising a memory andone or more processors coupled to the memory, the memory and the one ormore processors configured to perform the method of one or more aspectsof aspects 1-12.

Aspect 15: An apparatus for wireless communication, comprising at leastone means for performing the method of one or more aspects of aspects1-12.

Aspect 16: A non-transitory computer-readable medium storing code forwireless communication, the code comprising instructions executable by aprocessor to perform the method of one or more aspects of aspects 1-12.

Aspect 17: A non-transitory computer-readable medium storing a set ofinstructions for wireless communication, the set of instructionscomprising one or more instructions that, when executed by one or moreprocessors of a device, cause the device to perform the method of one ormore aspects of aspects 1-12.

The foregoing disclosure provides illustration and description, but isnot intended to be exhaustive or to limit the aspects to the preciseforms disclosed. Modifications and variations may be made in light ofthe above disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construedas hardware and/or a combination of hardware and software. “Software”shall be construed broadly to mean instructions, instruction sets, code,code segments, program code, programs, subprograms, software modules,applications, software applications, software packages, routines,subroutines, objects, executables, threads of execution, procedures,and/or functions, among other examples, whether referred to as software,firmware, middleware, microcode, hardware description language, orotherwise. As used herein, a processor is implemented in hardware and/ora combination of hardware and software. It will be apparent that systemsand/or methods described herein may be implemented in different forms ofhardware and/or a combination of hardware and software. The actualspecialized control hardware or software code used to implement thesesystems and/or methods is not limiting of the aspects. Thus, theoperation and behavior of the systems and/or methods were describedherein without reference to specific software code—it being understoodthat software and hardware can be designed to implement the systemsand/or methods based, at least in part, on the description herein.

As used herein, satisfying a threshold may, depending on the context,refer to a value being greater than the threshold, greater than or equalto the threshold, less than the threshold, less than or equal to thethreshold, equal to the threshold, not equal to the threshold, or thelike.

Even though particular combinations of features are recited in theclaims and/or disclosed in the specification, these combinations are notintended to limit the disclosure of various aspects. In fact, many ofthese features may be combined in ways not specifically recited in theclaims and/or disclosed in the specification. Although each dependentclaim listed below may directly depend on only one claim, the disclosureof various aspects includes each dependent claim in combination withevery other claim in the claim set. As used herein, a phrase referringto “at least one of” a list of items refers to any combination of thoseitems, including single members. As an example, “at least one of: a, b,or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well asany combination with multiples of the same element (e.g., a-a, a-a-a,a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or anyother ordering of a, b, and c).

No element, act, or instruction used herein should be construed ascritical or essential unless explicitly described as such. Also, as usedherein, the articles “a” and “an” are intended to include one or moreitems and may be used interchangeably with “one or more.” Further, asused herein, the article “the” is intended to include one or more itemsreferenced in connection with the article “the” and may be usedinterchangeably with “the one or more.” Furthermore, as used herein, theterms “set” and “group” are intended to include one or more items (e.g.,related items, unrelated items, or a combination of related andunrelated items), and may be used interchangeably with “one or more.”Where only one item is intended, the phrase “only one” or similarlanguage is used. Also, as used herein, the terms “has,” “have,”“having,” or the like are intended to be open-ended terms. Further, thephrase “based on” is intended to mean “based, at least in part, on”unless explicitly stated otherwise. Also, as used herein, the term “or”is intended to be inclusive when used in a series and may be usedinterchangeably with “and/or,” unless explicitly stated otherwise (e.g.,if used in combination with “either” or “only one of”).

What is claimed is:
 1. A method of wireless communication performed by auser equipment (UE), comprising: receiving, from a base station,configuration information regarding a set of available slots associatedwith transmitting sounding reference signal (SRS) information in an SRSresource set; receiving, from the base station, dynamic downlinkcommunication including a set of slot information values, the slotinformation values each indicating a select available slot of the set ofavailable slots; and transmitting, to the base station, the SRSinformation during the select available slot, determined based at leastin part on the set of slot information values and the configurationinformation.
 2. The method of claim 1, wherein the set of availableslots are included in an available-slot list.
 3. The method of claim 1,further comprising: determining the select available slot based at leastin part on a slot factor, associated with a format related to a givenslot, and an initial available slot value, the slot factor beingreceived via the dynamic downlink communication and the initialavailable slot value being received via the configuration information.4. The method of claim 1, wherein the set of slot information valuesincludes a slot factor indicating whether a given slot is an uplink slotreserved for uplink communications from the UE to the base station or isa downlink slot reserved for downlink communications from the basestation to the UE.
 5. The method of claim 1, wherein the dynamicdownlink communication includes downlink control information (DCI)received during a reference slot, the DCI including the set of slotinformation values.
 6. The method of claim 1, wherein the selectavailable slot occurs a given quantity of slots after a reference slot,indicated by the configuration information.
 7. The method of claim 1,wherein the dynamic downlink communication includes downlink controlinformation (DCI), and one or more bits included in the DCI indicate theset of slot information values.
 8. The method of claim 1, wherein thedynamic downlink communication includes downlink control information(DCI), and one or more bits included in the DCI indicate the set of slotinformation values, a quantity of the one or more bits being based atleast in part on a quantity of the set of available slots.
 9. The methodof claim 8, wherein the quantity of the one or more bits is based atleast in part on a maximum number of available slots associated with aset of available slots of a plurality of sets of available slots. 10.The method of claim 9, wherein the plurality of sets of available slotsare associated with at least one component carrier.
 11. The method ofclaim 1, wherein the set of available slots are included in a pluralityof available-slot lists, and the dynamic downlink communication includesa medium access control control element (MAC CE) and downlink controlinformation (DCI), the MAC CE indicating a given available-slot listfrom among the plurality of available-slot lists and the DCI includingthe set of slot information values associated with determining theavailable slot from the given available-slot list indicated by the MACCE.
 12. The method of claim 1, wherein the set of available slots areincluded in an available-slot list, and the dynamic downlinkcommunication includes a medium access control control element (MAC CE)and downlink control information (DCI), the MAC CE indicating a subsetof the set of available slots and the DCI including the set of slotinformation values associated with determining the available slot fromthe subset of the set of available slots indicated by the MAC CE.
 13. Auser equipment (UE) for wireless communication, comprising: a memory;and one or more processors coupled to the memory, the one or moreprocessors configured to: receive, from a base station, configurationinformation regarding a set of available slots associated withtransmitting sounding reference signal (SRS) information in an SRSresource set; receive, from the base station, dynamic downlinkcommunication including a set of slot information values, the slotinformation values each indicating a select available slot of the set ofavailable slots; and transmit, to the base station, the SRS informationduring the select available slot, determined based at least in part onthe set of slot information values and the configuration information.14. The UE of claim 13, wherein the set of available slots are includedin an available-slot list.
 15. The UE of claim 13, wherein the one ormore processors are further configured to: determine the selectavailable slot based at least in part on a slot factor, associated witha format related to a given slot, and an initial available slot value,the slot factor being received via the dynamic downlink communicationand the initial available slot value being received via theconfiguration information.
 16. The UE of claim 13, wherein the set ofslot information values includes a slot factor indicating whether agiven slot is an uplink slot reserved for uplink communications from theUE to the base station or is a downlink slot reserved for downlinkcommunications from the base station to the UE.
 17. The UE of claim 13,wherein the dynamic downlink communication includes downlink controlinformation (DCI) received during a reference slot, the DCI includingthe set of slot information values.
 18. The UE of claim 13, wherein theselect available slot occurs a given quantity of slots after a referenceslot, indicated by the configuration information.
 19. The UE of claim13, wherein the dynamic downlink communication includes downlink controlinformation (DCI), and one or more bits included in the DCI indicate theset of slot information values.
 20. The UE of claim 13, wherein thedynamic downlink communication includes downlink control information(DCI), and one or more bits included in the DCI indicate the set of slotinformation values, a quantity of the one or more bits being based atleast in part on a quantity of the set of available slots.
 21. The UE ofclaim 20, wherein the quantity of the one or more bits is based at leastin part on a maximum number of available slots associated with a set ofavailable slots of a plurality of sets of available slots.
 22. The UE ofclaim 21, wherein the plurality of sets of available slots areassociated with at least one component carrier.
 23. The UE of claim 13,wherein the set of available slots are included in a plurality ofavailable-slot lists, and the dynamic downlink communication includes amedium access control control element (MAC CE) and downlink controlinformation (DCI), the MAC CE indicating a given available-slot listfrom among the plurality of available-slot lists and the DCI includingthe set of slot information values associated with determining theavailable slot from the given available-slot list indicated by the MACCE.
 24. The UE of claim 13, wherein the set of available slots areincluded in an available-slot list, and the dynamic downlinkcommunication includes a medium access control control element (MAC CE)and downlink control information (DCI), the MAC CE indicating a subsetof the set of available slots and the DCI including the set of slotinformation values associated with determining the available slot fromthe subset of the set of available slots indicated by the MAC CE.
 25. Anon-transitory computer-readable medium storing a set of instructionsfor wireless communication, the set of instructions comprising: one ormore instructions that, when executed by one or more processors of auser equipment (UE), cause the UE to: receive, from a base station,configuration information regarding a set of available slots associatedwith transmitting sounding reference signal (SRS) information in an SRSresource set; receive, from the base station, dynamic downlinkcommunication including a set of slot information values, the slotinformation values each indicating a select available slot of the set ofavailable slots; and transmit, to the base station, the SRS informationduring the select available slot, determined based at least in part onthe set of slot information values and the configuration information.26. An apparatus for wireless communication, comprising: means forreceiving, from a base station, configuration information regarding aset of available slots associated with transmitting sounding referencesignal (SRS) information in an SRS resource set; means for receiving,from the base station, dynamic downlink communication including slotinformation values, the slot information values each indicating a selectavailable slot of the set of available slots; and means fortransmitting, to the base station, the SRS information during the selectavailable slot, determined based at least in part on the set of slotinformation values and the configuration information.